In small isolated tribal population-

Biology Organisms and Populations Populations Attributes Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 11, 2026

Wrestlers pass down the trait of strong muscles to the progeny

There is no change in population size due to large gene pool

There is decline in population as boys marry girls only of their tribe

Hereditary diseases like colour blindness do not spread

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In small, isolated tribal populations, inbreeding (marriage within the same group) can occur. This increases the chance of harmful recessive traits expressing, reduces genetic diversity, and may lead to inbreeding depression, which can reduce population fitness and size over time.

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